Headphones



FIG. 1 is a perspective view of the headphones showing my new design;

FIG. 2 is a front elevation view thereof;

FIG. 3 is a rear elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a top plan view thereof.

The broken lines shown in the drawings illustrate portions of the headphones that form no part of the claimed design. 

CLAIM The ornamental design for headphones, as shown and described. 